#include <iostream>
#include <vector>
#include <string>
using std::cout;
using std::endl;
using std::vector;
using std::string;


void test(){
    vector<char> vec{'h','e','l','l','o'};
    string str;
    for(char c :vec){
        str += c;
    }
    cout << str << endl;

}

int main()
{
    

    test ();
    return 0;
}

